Earm-gate



NITED sra'rns Parar rrrcn.

H. GRAY AND W. A. BURY, OF GROSSE ILE, MICHIGAN.

FARM-GATE.

Specification of Letters Patent No. 31,800, dated March 26, 1861.

To all whom it may concern:

Be it known that we, HORACE GRAY and WILLIAM A. BURY, of Grosse Ile, inthe county of Tay-ne and State of Michigan, have invented a new anduseful Improvement on Approach-OpeningGate Attachments; and we do herebydeclare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference being had to theannexed drawings, making' part of this specification, in which- Figure lis a perspective view (including gate) Fig. 2 a view from directly overthe gate and Fig. 3 the bolt boX with double bolt and balanced catch.

The nature of our invention consists, in providing the upper" end ofgate frame A Fig. l with a ratchet wheel B of diameter about one-thirdthe length ot' gate required the ratchets of which to be square sided sovas to work either way. The upper hinge l) is made by rounding the endof frame A and running -it up through cross bar O sutli-` ciently far tofurnish a pivot on which to swing lever E Fig. 2 to the long end ofwhich (say from the pivot one half the length of the gate) are attachedthe ropes F F which actuate it either way from independentposts as youapproach or leave the gate. Also to attach to the short end of thelever, far enough from the pivot, to work into the ratchets two pawls Grand H to traverse the gate and hold it open, leaving end enough to thelever for a staple in which the end of spring I can play to bring thelever to its normal position when the ropes are slackened up. The crossbar under the pawls to be made enough Wider than the lever to throw outboth pawls when in the normal position (in order to work the gate byhand in the. usual way) and to hold up the end of one pawl when theother is working. Also to attach to the underside of the lever a lineleading down through the cross bar to J Fig. l, thence to a staple K,thence down to the upper bolt L Fig. 3 which by means of bal anced catchM hooks into eye N on the upper end of the lower bolt.

'By pulling the handleof either rope you draw the lever toward Ayouwhich immediately raises both bolts clear of catch O (on the gate) andsets the opposite pawl into the ratchets opening the gate from. you,(see dotted linesFig. 2) also throwing the upper end of balanced catch MFig. 3 against bevele-d slot P inside of bolt boX and releasing thelower bolt it drops to dotted lines Q and remains until thrown up bycatch O when the gate shuts, whereupon balanced catch M takes hold againof eye N. After drawing the lever you slack up the rope and the spring lthrows the lever back to its normal position when you again draw andslack until the gate is wide open. Passing through you draw and slackthe other rope alternately until the gate is closed and latched.

)What we claim and desire to secure by Letters Patent, is-

The arrangement of lever E, with pawls Gr and H, the ratchet wheel B,the spring I, and catch M and its concomitant parts all as hereindescribed.

HORACE GRAY. lV. A. BURY. litnesses Mossns l?. HU'rcI-JINS, T. F.MooRHEAD.

